(Three more names — Chikamso, Harbour and Khymani — had dual-gender debuts in 2013, but we won’t know about their one-hit status until we see the 2014 data.)

Chaffee I’ve already written about, Ryly appeared when Riley was at its trendiest, and a couple of the other names (Rikishi, Chezarae) I’ll be writing about soon. The rest I can’t yet explain, but I’m working on it!

The Social Security Administration’s annual baby name list only includes names given to 5 or more U.S. baby girls (or baby boys) per year.

Most rare names never make the list, but a select group have appeared a single time. I like to call these the one-hit wonder baby names.

One-hit wonders tend to pop up with a relatively low number of babies — 5 or 6 — but a handful are given to dozens of babies…only to disappear again the next year! Intriguing, no?

Below are the highest-charting one-hit wonder names for every year on record before 2013. (We won’t know which 2013 names are one-hit wonders until later lists come out.) The format is: “Girl name(s), number of baby girls; Boy name(s), number of baby boys.”